通过坐标计算图幅编号。输入坐标点的X、Y值，计算坐标点所在图幅的图幅编号。-Calculation Sheet Numbers by coordinates. Enter the coordinates of the points X, Y value to calculate the coordinates of the point where the map sheet Sheet Number.

通过图幅编号计算坐标。输入图幅编号，计算图幅左下角的坐标值。-Calculate the coordinates by map sheet numbers. Enter Sheet Number, compute coordinate values lower left corner of the web of FIG.

当CAD图纸过多时一张张导入太耗时，使用些程序可以实现一键导入所有图纸。导入时使用的比例为1：1(When the CAD drawing is too much, it is too time-consuming to import one sheet. Some programs can be used to import all the drawings with one key. The proportion used when importing is 1:1)